Lunchboxes

Just Collecting Dust
Includes a variety of vintage metal and vinyl, as well as a collection of thermos bottles.
http://www.justcollectingdust.com

Lunch Box Collector
Features a price guide, trading post, cleaning information, historical information and images of boxes currently available for sale.
http://www.lunchboxcollector.com/

Lunchboxes.com
Offers Thermos brand, Igloo, Nissan steel, insulated soft, hard plastic, and metal.
http://www.lunchboxes.com